1.good quality 2.low price 3.easy installation 4.good reputation 1. MW-30M is single module amplifier. 2. 30 means gains, the biggest is 32dB, The biggest output of the two distribution is 28dB. 3. Frenquency can choose 47-550MHz, 47-750MHz, 47-860MHz 4. Power supply can choose 220V or 60V 5. Attenuation is 0-20dB adjustable, Equalizer is 0-20dB adjustable, You can also choose the fixed equalizer ...